Gasket-cutter.



W.y W. www@ GAslnE'cuTsn. APPLICATION FILED JUNE I5. |917-l 1 A fr;

Y l ya NVENTOR @www ATTORNEY WARNER W. SLAYBACK, OF PONGA CITY, OKLAHOMA.

GASKET-CUTTER.

To aZZ 'whom it may concern:

Be it known that I, VARNER lV. SLaY- BACK, a citizen of the United States, residing at Ponca City, in the county of Kay and State of Oklahoma, have invented new and useful Improvements in Gasket-Cutters, of which the following is a specification.

This invention relates to implements for cutting sheets of felt and other like material into gaskets, and more especially to those which employ `a sweep carrying rotary cutting knives; and the object of the same is to produce a device by means of which the outer circumference of the gasket and the inner circumference thereof may be cut to selective sizes, and which through special attachments may be employed for cutting gaskets from waste pieces of materialwhich are smaller than the opening in the base of the instrument. i

Details are set forth in the following speciiication, and reference is made to the accompanying drawings wherein;

- Figure 1 is a perspective view of this implement at work. Fig. 2 is a vertical sectional view, showing the sweep and cutters in elevation. 1

Figs. 3 and 4 are ysectional views of the washers.

The base 1of this machine is annular, or at leastI it has around opening through its center, and by preference itis externally round vso that it constitutes a ring as best seen in Fig. 1. lts inner edge is rabbeted as at 2, or in other words the lower half of the inner edge is cut away'leaving a flange projecting inward at the upper half thereof. On lthis base is mounted a skeleton frame 3 which may consist of two arches standing in planes at right angles to each other, their feet 4 riveted or otherwise secured to the base and their centers crossed or united and supporting a nut 5 which stands directly above the center of the annular base and lwhose threads are of very gentle pitch. Vertically the-nut should be quite long so that it constitutes a tubular guide for the :main shaft 6 which is threaded at 7 to correspond with the threads of the nut, above which it carriesa crank 8 having a handle 9. l

- To the lower end of the shafty is secured a sweep 10 which is a bar of rectangular crosssection extending horizontally across the interior of the frame 3 and marked on its side faces with scales 11. Slidably mounted Specification of Letters Patent. l

rarement aan. aa, iai.

Application filed .Tune 15, 1917. Serial No. 174,973.

on the two arms of said bar are sleeves 12 through which pass set screws 13 for holding them after they are adjusted along the scales, 11, and-each sleeve carries a depending fork`14 in which at 15 is pivoted a rotary cutter 1G.

With this constructiomthe crank is turned4 to rotate the shaft 6 reversely and run its threads 7 up through the nuts 5 so that the `cutting edges of the cutters 16 are above the plane ofthe lower face of the base 1, and then the implement is laid over a sheet of material such as felt F as indicated in Fig. 1. rlhe sleeves 12 are set at proper distances as seen in Fig. 2, and now when the crank handle 8 is turned to rotate the shaft, the entire sweep is moved around within the frame and downward slowly by means of the gentle threads 7, and eventually the edges of the cutters 16 come in contact with the work F anda gasket is cut out of the latter, the innermost rotary cutter 16 cutting its inner circumference and the outervious that thefpiece of work F must be of 'l sutiicient size to underlie the base 1 andperhaps to extend beyond it as seen in Fig. 1.

lt sometimes occurs that a small-sized gasket is to be cut, an old gasket is to be trimmed, or for some other reason the piece of work is not as large as the base, and means are therefore necessary toholdit down on the table or other support while' it is being cut--a service ordinarily performed by the annular base as seen in Fig.. l'

1. In order to thus practically or in effect reduce the size of the base, ll make use of -a plurality of washers, two of which are shown in Figs. 3 and 4. The larger washer 2O has its outer edge flanged at its lower half as at 21 to t-the rabbet 2 within the base 1, and its inner edge rabbeted as at 22. The smaller washer 30 also has its outer edge flanged as at 81 and its inner edge rabbeted as at 32. There might be a third and perhaps a fourth washer with a device of the size shown in the drawings, butrthe illustration is sutlicient to convey the idea. The larger washer is adapted to fit within the base, and when in place it of course reduces the size of the opening in such base. The smaller washer 30 is adapted to fit within the larger washer., and when in place it reduces the size thereof in the same manner.. rthe flanged outer edge of each movable eleita ment`ts 'the' rabbeted inner edge of 'the element next larger, or in other words the washers and the base constitute' coacting or nested members which are used or not as the case may require. If now it is desired `to cut a gasket from a small piece or scrap of materialF, whose sizeis such that the annular work as above described. i The use of the within the init Abeine Qi gentle pitch, and a gentle threads 7 is obviously to permit the rotation of the main shafttand the sweep and at the same time to cause the downy.ward vfeed of the shaft and the cutters when Vthe .crank handle is turned toV the right.

After cutting a gasket, the crank handle is reversed in itsdireetion of rotation and the shaft and the sweep and the cutters thereby raised, ready for the next operation. The employmentof a skeleton frame 3 permits the operator to reach through it any time and gain access to the set screws 13 so that Y sleeves may be adjusted inward or outward :or along the sweepfarms, without the necessity ef disconnecting the parte., The device is by preference. entirely of metal, and I be limited -t0;.Pi'Qp0rt0ns 0r detiiiflsi i 1 'In a :gasket cutter, the combination with.y an .annular base, a skeleton frame mounted thereon, a nuts-,carried by--the center @ffthe frame and axiallyv in alinemeiit with .the @eater Qt the base, the threads mainshatt threaded threiish Said mit; of means ati-he, Pretend 0f the VShaft i501 re- -t-atiigit either *direction` a Sweep Seearedafaess its layer end and having grad- -Goptes of this; patent may be ehtaine for nations marked on its arms, sleeves adjustably disposed on said arms, forks carried by the sleeves, and a rotary cutter mounted in each fork.

'2. In a gasket cutter, the combination with an annular base, a skeleton frame mounted thereon, a nut carried by the center of the frame and axially in alinement with the center of the base, the threads within the nut being of gentle pitch, and a main shaft threaded through said nut; of a crank handle at the upper end of said shaft, a sweep secured across the lower end of the shaft and rectangular in cross-section, sleeves ladjustably mounted on the arms of said sweep, and rotary cutters carried by said sleeves.

3. In a gasket cutter, the combination with an annular base rabbcted around its inner periphery, a skeleton frame mounted thereon and having a nut over the center of the base, a main shaft threaded through said nut and having operating means at its upper end, a. sweep at the lower end of the shaft within the frame, and rotary cutters carried by said sweep; of a plurality of washers whereof each has its outer edge iianged and its inner edge rabbeted, said washers and base making up a series of elcments adapted to be nested, for the purpose set forth.

fl. In a gasket cutter, the combination with' fan annular 4base, a frame mounted thereon, a shaft'rotatably mounted through theraxis of said frame, and the cutting mechanism carried by said shaft; of a series of washers of different size making up with said base a set of nested elements, each -iianged at itsouter edge and rabbetcd at its inner edge whereby the elements may be interengaged and applied as required.

In ytestimony whereof I affix my signature.

W. ,SLAYBACK ve cents each, `tug.addressing' the Commissioner of Patents.

Weehiilsten, D- C3 

